Rotary valve engine



4 Feb- '2, 1943- w. F; VALLIER 2,310,134

ROTARY VALVE ENGINE A Home)y Feb. 2,1943. w. F. vALLn-:R 2,310,134

ROTARY VALVE ENGINE Filed O'ct. 29, 1941 3 Sheets-Sheet 2 Feb. 2, 1943.

W. F. vALLlER EOTARY VALVE ENGINE Filed OC't. 2 9, 1941 3 Sheets-Sheet 3 l Patented Feb. 2, 1943 iliiiii'il STATES iffa'iiil'fi' @FFME morena' VALVE ENGINE Wilfred Fred Vallier, Fertsmit'h, Ark.

Application October 219, 1941, Serial No. 417,031

2 claims. `(o1. 12s- 59) This invention relates to new and useful improvements in internal combustion engines, and more particularly to improvements in rotary valves therefor.

The principal object of the present invention is to provide an improved rotary valve assembly for an internal combustion engine which will permit the exhaust of burnt gases the shortest route possible to eliminate as much as possible the contact of heat to other parts of the engine proper.

Another important object of the invention is to provide rotary valve means in which the intake passageway collars the rotary valve in such a way as to dissipate heat to a high degree.

Another important object of the invention is to provide a rotary valve assembly located at the side of the engine block in such a way that the engine pistons will shut oif the rotary valve cylinder ports at the time of firing thereby preventing direct exposure of the rotary valve to the force of combustion.

Various other important objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 represents a vertical sectional view through the valve assembly. i

Figure 2 is a transverse vertical sectional view.

Figure 3 is a sectional view taken substantially on line 3-3 of Figure 1.

Figure 4 is a fragmentary top plan view of the engine with the conduit removed.

Figure 5 is a fragmentary side elevational view of the engine head.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 denotes an engine block preferably having an integral head construction 6. In this block are cylindrical bores 'I in which operate pistons 8 connected by piston rods 9 to a crank shaft il) operating in a crank case Il. Suitable ignition means l2 is provided at the head of the block 5.-

Numeral i3 generally refers to the improved rotary valve assembly and this includes an-elongated block lll which is detachably attached to one side of the cylinder block 5, in a manner so that the ports l5 in one side thereof will match the ports I3 in the opposed side of the block 5.

The valve block I4 has a depending apron I'i formed with openings through which machine screws i8 are disposed and driven into the block 3, and then the block I4 is also provided with a horizontally disposed flange I9 which overlaps the head 6 of the block 5 and has openings through which machine screws 20 are disposed and driven downwardly into one side edge portion of the head 6.

As can be seen in Figure 2, the block I has a longitudinally disposed cylindrical bore 2l containing a rotary valve element which at intervals opposed to the ports I5 is formed with by-passes 22, the back walls of which are out on a V, as is clearly shown in Figure 2.

Extending upwardly from the bore 2l are ports 23 for exhaust gases. Outwardly of the exhaust ports 23 are intake passageways 24 which extend downwardly and around the lower outside portion of the bore 2! to open into the bore 2l through the bottom thereof, as at 25. Thus, it can be seen that the intake fuel will to a substantial extent tend to dissipate the heat arising from the exhaust of burnt gases through the ports 23.

A conduit 25 is provided on the top of the block I4 and has an exhaust passageway 21 extending longitudinally therein and also an intake passageway 23.

Numeral 2'9 denotes a tubular support for the rotary valve which extends longitudinally through the bore 2l and has one end disposed into a face plate 33 attached by machine screws or the like 3| to one end of the block Iii. Connected to this end of the tubular support 29 is a lubricant pipe 32. A jam nut 33 on this end of the support 29 is driven against the face plate 3G to prevent shifting of the support 29.

The other end of the tubular support 29 is disposed through the upper portion of a housing 34 which extends vertically at the other end of the engine and encases a sprocket chain 35 which is disposed over a sprocket wheel 36 on the crank shaft HJ and also over a sprocket wheel 3'lvon the corresponding end of the rotary Valve (see Fig. 1). A nut 38 is provided on this latter end of the support 23 to prevent longitudinal shifting of the support.

Bushings 40 are provided between the support 29 and the inside of the rotary valve so as to define an oil space 4I to which oil from the interior of the support 23 can pass by way of the openings 42 in said support. At definite and appropriate intervals, the periphery of the rotary valve is formed with circumferential grooves 43 for the reception of oil and radial ports 3' for conducting oil out of said valve.

As can be seen in Figure 1, apointed valve element 44 is threadedly disposed into the forward end of the support 29 to regulate the passage of oil from the interior of the support 29 to the escape duct 115. Oil that escapes from the support 29 by way of the duct passes downwardly on the inside of the housing 34, suitably lubricating the chain 35 and ultimately escaping from the housing 34 by Way of the port 36 back to the crank case l l.

Attention is directed to the fact that a double oil seal is provided by my invention, one between the wall of the bore 2i and the rotary valve element, and the other in the space l between said element and the support 29 and around said support, so that the incoming oil in the support is maintained at a cool temperature to be fed to the exterior of the valve element. Also the oil in the space 4| aids in maintaining the rotary valve element cool.

While the foregoing specication sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the claimed as new is:

invention, what is 1. In an internal combustion engine, a. rotary valve assembly including a block, a rotary valve element operative in the block, an elongated tubular support extending through the rotary element, spacer means between the support and the rotary element to dene oil spaces, an oil supply to one end of the support, said support having openings therein to permit oil to pass into the said oil spaces.

2. In an internal combustion engine, a rotary valve assembly including a block, a rotary valve element operative in the block, an elongated tubular support extending through the rotary element, spacer means between the support and the rotary element to dene oil spaces, an oil supply to one end of the support, said support having openings therein to permit oil to pass into the said oil spaces, said engine having a crank case, and return means from one end of the rotary element support to the crank case.

W. FRED VALLIER. 

